AI developer tools with an API
The INITE Atlas lists 1293. By use, the list opens with GitHub, Cloudflare, Brandfetch, Twilio and Progress.com.
The homepage shows an API or an SDK: it can be called from code.
Where each one says so
Ranked by use
Figure and bar: visits/mo, estimate · year: online since
- #2

GitHub
Hosts Git repositories with pull requests, code review, issue tracking and Actions pipelines for building, testing and deploying code.
42MFrom $4/user/mo2007 - #3

CloudflareMCP · open
Proxies website traffic through a global network for CDN caching, DNS, DDoS protection and a web firewall, plus Workers serverless code and zero-trust access.
4.9MActiveFrom $20/mo2009 - #4

Brandfetch
Provides API access to a database of brand logos, colors, and assets for integration into applications.
1.2MActiveFrom $99/mo - #5

Twilio
Sends and receives SMS, email, and voice messages through APIs and manages customer conversations with AI.
1.1MActiveFree plan2008 - #6

Progress.com
Sells developer and infrastructure software: Telerik and Kendo UI component libraries, Sitefinity CMS, MOVEit file transfer, Chef automation and MarkLogic data platform.
973kActive1981 - #7

Higgsfield API
Provides API access to 50+ generative models for image, video, and audio creation at competitive pricing.
791kActiveFrom $15/mo2023 - #8

AI-Native Cloud
Rents cloud virtual machines (Droplets), managed Kubernetes, databases, object storage and app hosting, plus GPU instances and model inference endpoints.
603kActiveFrom $4/mo2011 - #13

TestMu AI (Formerly LambdaTest)
Runs manual and automated Selenium, Playwright, Cypress and Appium tests on cloud browsers and real mobile devices, with test agents for generating tests.
370kActiveFrom $17/mo2017 - #14

Browserbase
Provides browser automation and web interaction APIs for agents to navigate, extract data, and complete tasks on websites.
318kActiveFrom $20/mo - #15

Cursor
AI coding agent that writes code, runs tasks, and reviews pull requests autonomously or with human direction.
314kActiveFrom $8/mo2023 - #16

UptimeRobotMCP · sign-in
Checks websites, APIs, ports and cron jobs on a schedule and sends alerts when they fail or slow down.
283kActiveFrom $12/mo - #22

Microsoft AI
Provides foundational AI models for transcription, reasoning, code generation, image creation, and speech synthesis.
219kActive - #23

Pi Coding Agent
Minimal agent harness for building custom coding workflows with extensible skills and multi-model support.
208kActive - #24

PostmanMCP · sign-in
Designs, tests, and manages APIs with integrated documentation, mocking, monitoring, and workflow automation.
202kActiveFrom $9/mo2013 - #26

Ollama
Runs open-source language models locally or in cloud, with API access for coding agents.
193kActiveFrom $20/mo2023 - #28

AlchemyMCP · sign-in
Provides node RPC endpoints, indexed blockchain data APIs, and wallet and transaction APIs across about 100 chains.
174kActiveFrom $0.53 per use2017 - #29

Warp
Terminal app with built-in coding agents that run commands, edit code and review changes, plus cloud agents triggered from team workflows.
162kActiveFrom $20/mo - #31

KeployMCP · open
Captures production traffic to generate tests and mocks, replaying them to detect regressions.
153kActiveFrom $19/user/mo2021 - #32

TinyFishMCP · sign-in
Provides web search, content fetching, browser automation, and agent APIs for AI applications to access and interact with live web content.
150kActiveFrom $0.02 per use - #33

Expo
Build and deploy native iOS and Android apps from a single React codebase with cloud infrastructure and over-the-air updates.
146kActiveFrom $19/mo2015 - #36

VercelMCP · sign-in
Deploys web front-ends and serverless functions from Git, with preview builds, a global CDN and an AI model gateway; maintains Next.js.
141kActiveFrom $20/mo2015 - #37

CircleCIMCP · sign-in
Runs CI/CD pipelines defined in YAML, building, testing and deploying code on every commit across cloud or self-hosted runners.
136kActiveFrom $15/mo2011 - #38

Voice, Video & Chat APIs for Real-Time Interaction
Provides SDKs and APIs for embedding voice, video, chat, and live streaming in applications.
135kActiveFrom $0.39 per use2015 - #40

Progress Telerik
Sells UI component libraries, reporting tools and testing tools for building .NET and JavaScript web, desktop and mobile applications.
123kActiveFrom $1,149/user/yr2002 - #43

ScanditMCP · sign-in
Scans barcodes, labels and ID documents through a phone or browser camera using on-device vision, feeding store inventory and self-checkout data.
106kActiveFree plan2009 - #44

Devart Software
Database management tools, data connectivity drivers, and no-code ETL platform for SQL Server, MySQL, Oracle, and PostgreSQL.
105kActive1997 - #45

Nebius
Provides GPU infrastructure and managed services for training and deploying AI models at scale.
103kActiveFrom $0.05/mo - #50

The Content Repurpose Revolution
Provides multimodal AI models and products for content creation, code generation, and agent-based task automation.
87.7kActivePay per use2021 - #51

GlobalGPT
Provides unified access to 100+ AI models including GPT, Claude, Gemini, and video generation tools via web or CLI.
87.3kActiveFrom $5.80/mo2023 - #54

UnblockedMCP · sign-in
Provides context to AI coding agents across code, conversations, issues, and production systems to reduce rework and human intervention.
77.3kActiveFrom $29/user/mo2021 - #56

Sonar
Analyzes source code statically in IDEs, CI pipelines and pull requests, reporting bugs, code smells, vulnerabilities and coverage against quality gates.
72.4kActiveFrom $34/mo2007 - #62

AI Operator by BLACKBOX AI
Writes and edits code through a chat app, IDE extensions and a CLI coding agent that can call many different language models.
58.6kActiveFrom $0.30 per use - #67

RefineAI
Provides an open-source React framework for building admin panels, dashboards and internal CRUD tools on REST, GraphQL or Supabase backends, plus an app generator.
46kActiveFrom $0.99/mo2021 - #69

FusionAuthMCP · open
Hosts login, single sign-on, multi-factor and passwordless authentication, plus user management and role-based access, self-hosted or on FusionAuth's cloud.
42.2kActiveFrom $162/mo - #70

DevExpressMCP · open
Supplies UI controls, reporting, dashboard and document-processing libraries that developers embed in .NET, Java and JavaScript apps.
41.2kActiveFrom $249.99/yr1998 - #74

Workato
Connects business applications and data through recipe-based integrations and workflow automation, with governance for AI agents across systems.
38kActive - #78

Merge
Provides one unified API for HR, payroll, ATS, CRM, accounting and file-storage integrations, plus authenticated tool access for AI agents.
35.1kActiveFrom $650/mo2020 - #79

GrowthBook
Runs A/B tests, manages feature flags, and analyzes product data from your data warehouse.
34.8kActiveFrom $40/user/mo2020 - #82

WorkOSMCP · sign-in
Provides SSO, user management, directory sync and audit log APIs that let developers add enterprise sign-in features to their application.
30.9kActiveFrom $99/mo2019 - #86

v0
Generates full-stack web applications from text prompts, publishes them as live websites, and syncs code to GitHub repositories.
28.8kActiveFrom $30/user/mo - #93

Open WebUI
Self-hosted web interface for running AI models locally with data residency and access control.
25.2kActiveFree plan - #94

WaveSpeedAIMCP · sign-in
Hosts image, video, audio and LLM models behind one API key, with a CLI, MCP server and desktop app.
25.1kActiveFrom $0.01 per use2025 - #96

Recall AI
Provides APIs and SDKs to record video calls, extract transcripts, and capture meeting metadata.
24.7kActiveFrom $0.50 per use - #97

Paragon
Provides embedded integration infrastructure so SaaS products ship native integrations with customers' apps, handling auth, data sync and workflows.
24.4kActiveFree plan2019 - #99

AI SDK
Unified TypeScript SDK for building AI applications with streaming, multi-model support, and fallbacks.
22.6kActiveOpen source - #100

January AIMCP · sign-in
Provides glucose prediction, nutrition intelligence, and health context APIs for digital health applications.
22.5kActiveFrom $99/mo2017 - #101

Pipedream
Builds workflows that connect APIs through triggers, prebuilt actions and custom Node.js or Python code steps, run on hosted serverless infrastructure.
22.5kActiveFrom $29/mo - #103

Convex
Provides a hosted backend with a reactive database, TypeScript server functions, real-time sync and scheduled jobs.
21kActiveFrom $25/user/mo
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
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